#Pallada_Bars

# Metatrader MQL Script Logic Explanation

## Overview
This script is designed for a MetaTrader terminal, specifically using the MQL4 programming language. The script calculates and displays various indicators based on technical analysis techniques such as CCI (Commodity Channel Index), WPR (Welles Wilder Percentage Range), and Force Index with different periods. These indicators are then used to determine whether to display high, low, open, or close values of the candlesticks.

## Variables
- `g_period_76`, `g_period_84`, and `g_period_92`: Constants representing different time periods for calculations.
- `g_ibuf_100[]` through `g_ibuf_128[]`: Buffers used to store the calculated values.

## Initialization
```mql
int init() {
   // Set index styles and buffers, define indicator name
   SetIndexStyle(0, DRAW_HISTOGRAM);
   SetIndexBuffer(0, g_ibuf_100);
   ...
   IndicatorShortName("#PalladaSE_Bars©2009 TradeWays");
   return (0);
}

• The init function configures the display style and buffer for each of the indicators. It also sets a descriptive name for the indicator.

Main Calculation

int start() {
   // Local variables
   double l_icci_8, l_iwpr_16, l_iforce_24;
   int li_0;

   // Loop through all bars to calculate values
   for (li_0 = 0; li_0 < Bars - 1; li_0++) {
      l_icci_8 = iCustom(_Symbol, _Period, "CCI", g_period_84, 1)[li_0];
      l_iwpr_16 = iCustom(_Symbol, _Period, "WPR", g_period_92, 1)[li_0];
      l_iforce_24 = iForce(_Symbol, _Period, g_period_76, MODE_EMA, PRICE_CLOSE, li_0);

      // Determine and assign values based on conditions
      if (l_icci_8 > 0.0 && l_iwpr_16 > -50.0 && l_iforce_24 > 0.0) {
         g_ibuf_100[li_0] = MathMax(Open[li_0], Close[li_0]);
         g_ibuf_104[li_0] = MathMin(Open[li_0], Close[li_0]);
         g_ibuf_116[li_0] = High[li_0];
         g_ibuf_120[li_0] = Low[li_0];
      } else {
         if (l_icci_8 > 0.0 && l_iwpr_16 < -50.0) {
            g_ibuf_108[li_0] = MathMax(Open[li_0], Close[li_0]);
            g_ibuf_112[li_0] = MathMin(Open[li_0], Close[li_0]);
            g_ibuf_124[li_0] = High[li_0];
            g_ibuf_128[li_0] = Low[li_0];
         } else {
            if (l_icci_8 < 0.0 && l_iwpr_16 < -50.0 && l_iforce_24 < 0.0) {
               g_ibuf_104[li_0] = MathMax(Open[li_0], Close[li_0]);
               g_ibuf_100[li_0] = MathMin(Open[li_0], Close[li_0]);
               g_ibuf_120[li_0] = High[li_0];
               g_ibuf_116[li_0] = Low[li_0];
            } else {
               if (l_icci_8 < 0.0 && l_iwpr_16 > -50.0) {
                  g_ibuf_112[li_0] = MathMax(Open[li_0], Close[li_0]);
                  g_ibuf_108[li_0] = MathMin(Open[li_0], Close[li_0]);
                  g_ibuf_128[li_0] = High[li_0];
                  g_ibuf_124[li_0] = Low[li_0];
               }
            }
         }
      }

   return (0);
}

• The start function is the main computation loop that processes each bar in the current chart.
• It calculates CCI, WPR, and Force Index for each bar using iCustom and iForce.
• Based on the calculated values, it determines which high, low, open, or close value to assign to the respective buffer.

Key Conditions

The script uses nested if conditions to check multiple indicators:

1. Positive CCI (l_icci_8 > 0.0):
   • Combined with other conditions (WPR and Force Index) it assigns high, low, open, close values.
2. Negative WPR (l_iwpr_16 < -50.0):
   • Depending on CCI value, it assigns different combinations of Open/Close/High/Low values to the buffers.

Buffer Assignment

• Buffers are assigned based on the conditions and the current bar's high, low, open, or close price.

This script effectively combines multiple technical indicators to identify specific market conditions and highlight relevant price levels for trading analysis. The logic can be fine-tuned further depending on the specific trading strategy requirements.

## Conclusion
The provided script is a comprehensive example of how to implement and combine different technical indicators in MetaTrader using MQL4. It demonstrates effective use of loops, conditional statements, and external function calls (like `iCustom` and `iForce`) to analyze market data and provide insights for trading decisions.